LT3008E .............................................–40°C to 125°C
LT3008I ..............................................–40°C to 125°C
Storage Temperature Range...................–65°C to 150°C
Lead Temperature: Soldering, 10 sec
TS8 Package Only ............................................. 300°C
PIN CONFIGURATION
TOP VIEW
TOP VIEW
ADJ 1
OUT 2
OUT 3
7
6 GND
5 SHDN
4 IN
SHDN
GND
GND
GND
1
2
3
4
8
7
6
5
NC
ADJ
OUT
IN
DC PACKAGE
6-LEAD (2mm 2mm) PLASTIC DFN
T
JMAX
= 125°C,
θ
JA
= 65°C/W TO 85°C/W*
EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB
TS8 PACKAGE
8-LEAD PLASTIC TSOT-23
T
JMAX
= 125°C,
θ
JA
= 65°C/W TO 85°C/W*
* See Applications Information Section.
ORDER INFORMATION
LEAD FREE FINISH
LT3008EDC#PBF
LT3008IDC#PBF
LT3008ETS8#PBF
LT3008ITS8#PBF
LEAD BASED FINISH
LT3008EDC
LT3008IDC
LT3008ETS8
LT3008ITS8
TAPE AND REEL
LT3008EDC#TRPBF
LT3008IDC#TRPBF
LT3008ETS8#TRPBF
LT3008ITS8#TRPBF
TAPE AND REEL
LT3008EDC#TR
LT3008IDC#TR
LT3008ETS8#TR
LT3008ITS8#TR
PART MARKING*
LDPS
LDPS
LTDSX
LTDSX
PART MARKING*
LDPS
LDPS
LTDSX
LTDSX
PACKAGE DESCRIPTION
6-Lead (2mm
×
2mm) Plastic DFN
6-Lead (2mm
×
2mm) Plastic DFN
8-Lead Plastic TSOT-23
8-Lead Plastic TSOT-23
PACKAGE DESCRIPTION
6-Lead (2mm
×
2mm) Plastic DFN
6-Lead (2mm
×
2mm) Plastic DFN
8-Lead Plastic TSOT-23
8-Lead Plastic TSOT-23
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
3008f
2
LT3008
ELECTRICAL CHARACTERISTICS
PARAMETER
Operating Voltage
ADJ Pin Voltage (Notes 3, 4)
Line Regulation (Note 3)
Load Regulation (Note 3)
Dropout Voltage
V
IN
= V
OUT(NOMINAL)
(Notes 5, 6)
V
IN
= 2V, I
LOAD
= 100μA
2V < V
IN
< 45V, 1μA < I
LOAD
< 20mA
ΔV
IN
= 2V to 45V, I
LOAD
= 1mA
V
IN
= 2V, I
LOAD
= 1μA to 10mA
V
IN
= 2V, I
LOAD
= 1μA to 20mA
I
LOAD
= 100μA
I
LOAD
= 100μA
I
LOAD
= 1mA
I
LOAD
= 1mA
I
LOAD
= 10mA
I
LOAD
= 10mA
I
LOAD
= 20mA
I
LOAD
= 20mA
Quiescent Current (Notes 6, 7)
GND Pin Current
V
IN
= V
OUT(NOMINAL)
+ 0.5V (Notes 6, 7)
I
LOAD
= 0μA
I
LOAD
= 0μA
I
LOAD
= 0μA
I
LOAD
= 100μA
I
LOAD
= 1mA
I
LOAD
= 10mA
I
LOAD
= 20mA
C
OUT
= 2.2μF I
LOAD
= 20mA, BW = 10Hz to 100kHz
,
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
J
= 25°C. (Note 2)
CONDITIONS
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
MIN
2
594
588
TYP
600
600
0.6
0.4
0.5
115
170
270
300
3
MAX
45
606
612
3
2
5
180
250
250
350
340
470
365
500
6
UNITS
V
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
μA
μA
μA
μA
μA
μA
μA
μV
RMS
nA
V
V
μA
μA
μA
dB
mA
mA
3
6
21
160
350
92
–10
0.25
0.4
0.67
0.61
0.65
58
70
75
22
1
0.6
6
12
50
500
1200
10
1.5
±1
2
<1
Output Voltage Noise (Note 9)
ADJ Pin Bias Current
Shutdown Threshold
SHDN
Pin Current
Quiescent Current in Shutdown
Ripple Rejection (Note 3)
Current Limit
Input Reverse Leakage Current
Reverse Output Current
V
OUT
= Off to On
V
OUT
= On to Off
V
SHDN
= 0V, V
IN
= 45V
V
SHDN
= 45V, V
IN
= 45V
V
IN
= 6V, V
SHDN
= 0V
V
IN
– V
OUT
= 1.5V, V
RIPPLE
= 0.5V
P-P
,
f
RIPPLE
= 120Hz, I
LOAD
= 20mA
V
IN
= 45V, V
OUT
= 0
V
IN
= V
OUT(NOMINAL)
+ 1V,
ΔV
OUT
= – 5%
V
IN
= –45V, V
OUT
= 0
V
OUT
= 1.2V, V
IN
= 0
l
l
l
l
l
l
l
30
10
μA
μA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
The LT3008 is tested and specified under pulse load conditions
such that T
J
≅
T
A
. The LT3008E is 100% tested at T
A
=25°C. Performance
at – 40°C and 125°C is assured by design, characterization and correlation
with statistical process controls. The LT3008I is guaranteed over the full
– 40°C to 125°C operating junction temperature range.
Note 3:
The LT3008 adjustable version is tested and specified for these
conditions with the ADJ pin connected to the OUT pin.
Note 4:
Operating conditions are limited by maximum junction
temperature. The regulated output voltage specification will not apply
for all possible combinations of input voltage and output current. When
operating at the maximum input voltage, the output current range must be
limited. When operating at the maximum output current, the input voltage
must be limited.
Note 5:
Dropout voltage is the minimum input to output voltage differential
needed to maintain regulation at a specified output current. In dropout, the
output voltage equals (V
IN
– V
DROPOUT
).
3008f
3
LT3008
ELECTRICAL CHARACTERISTICS
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
J
= 25°C. (Note 2)
Note 8:
The
SHDN
pin can be driven below GND only when tied to the IN
pin directly or through a pull-up resistor. If the
SHDN
pin is driven below
GND by more than –0.3V while IN is powered, the output will turn on.
Note 9:
Output noise is listed for the adjustable version with the ADJ pin
connected to the OUT pin. See the RMS Output Noise vs Load Current
curve in the Typical Performance Characteristics Section.
Note 6:
To satisfy minimum input voltage requirements, the LT3008
adjustable version is tested and specified for these conditions with an
external resistor divider (61.9k bottom, 280k top) which sets V
OUT
to 3.3V.
The external resistor divider adds 9.69μA of DC load on the output. This
external current is not factored into GND pin current.
Note 7:
GND pin current is tested with V
IN
= V
OUT(NOMINAL)
+ 0.5V and a
current source load. GND pin current will increase in dropout. See the GND
Pin Current curves in the Typical Performance Characteristics section.
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